Mailbox insert



FIG. 1 is a front elevational view of the mailbox insert of the present invention;

FIG. 2 is a rear elevational view of the mailbox insert of FIG. 1;

FIG. 3 is a right side elevational view of the mailbox insert of FIG. 1, the left view being a mirror image thereof;

FIG. 4 is a top plan view of the mailbox insert of FIG. 1;

FIG. 5 is a bottom plan view of the mailbox insert of FIG. 1; and,

FIG. 6 is a top, front, right side perspective view of the mailbox insert of FIG. 1.

The broken lines showing of a mailbox in FIG. 6 is for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a mailbox insert, as shown and described. 